I'm wondering if it's possible to detect when a user has clicked the Header/Footer button in Excel so I can show some custom header/footer related ribbon controls on my add-in's tab and hide them when the user is not in header/footer edit mode.
Is it possible to hijack this button click somehow? I've seen applications hijack the Excel Save before. I'm looking for similar behavior just with the header/footer button.
I'm using C#, Visual Studio 2012 and Excel 2010. I've created my custom ribbon using the Ribbon XML approach.
One way I've discovered that worked was to use the
<commands>
section in the Ribbon XML (which I didn't know existed.) Apparently this mechanism allows you to re-purpose actions intrinsic to Excel but beware that not all controls support re-purposing the onAction callback)along with the associated event handler:
This link was very helpful:
http://social.msdn.microsoft.com/Forums/office/en-US/e1a60d16-053e-4697-b17c-b22d602f0400/intercept-the-onaction-event-of-a-gallery-element-of-excel-2007-ui-ribbon?forum=vsto